Heap-based Buffer Overflow Affecting nscd package, versions *
Threat Intelligence
Snyk has a published code exploit for this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CENTOS6-NSCD-1991779
- published26 Jul 2021
- disclosed11 Jan 2018
Introduced: 11 Jan 2018
CVE-2018-1000001 (opens in a new tab)How to fix?
There is no fixed version for Centos:6 nscd.
NVD Description
Note: Versions mentioned in the description apply only to the upstream nscd package and not the nscd package as distributed by Centos.
See How to fix? for Centos:6 relevant fixed versions and status.
In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.
References
- http://www.securityfocus.com/bid/102525
- https://security.netapp.com/advisory/ntap-20190404-0003/
- https://access.redhat.com/security/cve/CVE-2018-1000001
- https://www.exploit-db.com/exploits/43775/
- https://www.exploit-db.com/exploits/44889/
- https://www.halfdog.net/Security/2017/LibcRealpathBufferUnderflow/
- http://seclists.org/oss-sec/2018/q1/38
- https://access.redhat.com/errata/RHSA-2018:0805
- http://www.securitytracker.com/id/1040162
- https://usn.ubuntu.com/3534-1/
- https://usn.ubuntu.com/3536-1/
- https://www.exploit-db.com/exploits/44889